Right now we need a reactive measure, not a protracted one! This softfork was initiated precisely for the emergency CSAM use case. I think there is no need to compromise on an emergency softfork.
Aside from that, I think the presence of the reactive softfork option will push consensus more towards a preactive softfork, which is good.
The long-term, more cautious action can be discussed later; that is a time-consuming topic.